Improvement in sheet-metal roofing



J. T. HYNDMAN. Sheet-Metal Roofing.

No. 211,910. Patented Feb. 4, 1879.

N. PETERS, FMOTWUTHOGRAPNER, WASHINGTON. 1')v C.

UNITED STATES PATENT OEEIcE.

JOHN T. HYNDMAMN, OF CINCINNATI, OHIO.V

IMPROVEMENT IN SHEET-METAL ROOFING.

Specification forming part of Letters Patent No. 211,910, dated February4, 1879; application filed November l1, 1878. I

To all whom t may concern:

Be it known that I, JOHN T. HYNDMAN, of Cincinnati, in the county ofHamilton and State of Ohio, have invented a new and valuable Improvementin Sheet-Metal Roofing; and I do hereby declare that the following is afull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis specification, and to the letters and figures of reference markedthereon.

Figure l of the drawings is a representation of a perspective view of asection of a roof, showing my invention. Fig. 2 is an end view of thesame. Fig. 3 is a perspective view of the cap, and Fig. 4 is an end viewthereof.

Previous to my invention that class of roofing in which the anchors weredivided centrally to form two parts bentin opposite directions over theupturned edges of the sheets, and in which a sheet-metal cap wasemployed passing over and around and securing the two bent portions ofthe anchors was liable to many objections, as the form of the caprequired a machine to turn it down over and around the anehor, and inaddition thereto a skilled workin an or mechanic to do the Work; besideswhich,the point at which the ends ofthe caps meet did not presentaperfect water-ti ght j oint. It is therefore the purpose of the presentinvention to remove, as far as possible, these difficulties by sobending the cap by machinery in the shop as to dispense with machineryupon the roof or other structure, thereby enabling any one, though not amechanic, to apply it without 'the use of any special tools orimplements; and the peculiar form of the caps admits of theirends,.wlien placed upon the roof, overlapping each other to preventleaking at the joints, as will be hereinafter described, and pointed outin the claim.

In the accompanying drawings, Arepresents a section of a roof or otherstructure, to which are secured the sheet-metal plates B by the' anchorsC. The lower ends of the anchors C are secured, by nails or othersuitable means, to the roof or structure A, and the upper ends thereofare slitted to present two flanges, a b, bent in opposite directionsaround and down parallel, or nearly so, with the vertical part of theanchor, and over and around the contacting edges of the sheets. Theanges a b of the anchors C are so bent as to leave sufficient spacebetween them and the sheets to admit the insertion of a cap, D. This capis bent around in form of an inverted U, and the edges upon each sidethereof bent upward within the same to form slots or spaces for thereception of the flanges a b of the anchors C; and at each end of thecap are projecting flanges c, which overlap the anges of the adjoiningcap, thereby making a very tight and secure joint at that point.

The peculiar construction of the cap D renders it readily and easilysecured over the sheets and flanges of the anchors by slipping it on atthe end of the sheets, and sliding it along until the flanges of the caplap over the iange of the adjoining-cap, after which the cap can betightly and securely fastened in place by a hammer or other similartool.

Having now fully described my invent-ion, what I claim as new, anddesire to secure by Letters Patent, is-

rIhe means herein described for securing sheet-metal plates tostructures, consisting of the cap D, bent as shown and described, andhaving the anges c, and the slitted anchors C, bent over the edges ofthe plates B, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

J OHN T. HYNDMAN.

Witnesses:

R. J. HYNDMAN, JAMES LovE.

